SOUND_MIXER_MIC
#define SOUND_MASK_MIC (1 << SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_MIC MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_MIC MIXER_WRITE(SOUND_MIXER_MIC)
{ SOUND_MIXER_MIC, "Mic", 0 },